Gage.



F. SCHUBERT.

GAGE.

1 173 APPLICATION FILED MAY I5. |915. 'Patented May 2 SHEETS-SHEET I.

FIL?. 1 15 gnoantoz Frederic/r Schubert F. SCHUBERT.

GAGE.

APPLICATION mm MAY 15, 1915.

Patented May 2, 1916.

2 SHEETS-SHEET 2 K INVENTOR Frederick Schubert.

WITN ESSES ntain new Grages, of which the following 1s a speelli- UNITED STATES PATENT OFFICE.

FREDERICK SCHUBERT, OF SELLERSVILLE, PENNSYLVANIA.

GAGE.

Application filed May 15, 1915.

To all 'whom it may concern.'

Be it known that l, FREDERICK SCIIUEnT, a citizen of the United States, residing at Sellersville, in the countyr of Bucks and State of Pennsylvania, have invented cer i and useful Improvements in cation.

My invention relates to gages and similar instruments and it has particular' relation to improved means for mounting the face glasses in such instruments whereby the same will be less liable to breakage in trans portation and in use.

My invention' contemplates improved means for providing a resilient support for said face glass whereby the glass will be permitted to be depressed slightly in the event of a light blow or pressure being' brought to bear on any portion thereof.

Heretofore in the mounting of the face glasses of pressure gages and similar instruments, it has been usual to support the glass at the periphery thereof more or less rigidly so that in the event of a light blow or pressure upon any portion of the glass the same would be cracked or broken. Numerous means for overcoming this difficulty have been tried such as the employment of comA pressible gaskets and in some instances separate springs have been employed at various points about the periphery of the glass. lVhere such springs have been employed in the construction heretofore designed, the arrangement was more or less clumsy and required considerable space beneath the retaining ring, resulting in an inelegant design and appearance of the face of the gage. My invention contemplates an integral device adapted to be mounted beneath the periph-A ery of the face glass occupying a small space and also having means whereby the glass will be prevented from being forced entirely down in contact with the dial plate which would result in damage either to the glass itself or to the needle or other indicating mechanism which is arranged between said dial plate and the glass.

A 'modified form of my invention contemplates the construction of the resilientxsupporting means and the limiting means inte gral with the dial plate itself.

The nature and characteristic features of my invention will be more readily understood from the following description taken Specification of Letters Patent.

Serial No. 28,252.

in connection with the accompanying draw ings. forming part hereof, in which- Flgure 1 isa front elevation of a pressure gage with the fare glass and its retaining ring removed and showing the device for supporting the face glass and embodying the main features of my present invention mounted therein; Fig. 2 is a perspective view of the supporting ring detached; Fig. 3 1s a fragmentary sectional view of the gage casing taken approximately on the line 3-3 of Fig. 1; Fig. 4 is a view similar to Fig. 1 but showing a modified form of my invention; Fig. 5 is a view similar to Fig. 2 illustrating the modified form of the ring shown in Fig. 4; Figs. G and T are sectional views taken respectively on the lilies 6 6 and T-T of Fig. 4; Fig. 8 is a view similar to Fig. 2, but illustrating a modified form of my invention wherein the spring supporting means 1s constructed as an integral portion of the dial plate; and Fig. 9 is a fragmentary perspective view of said dial plate provided with the integral spring supporting means.

Referring now more particularly to Figs. 1 to 3 of the drawings, the gage or other instrument may be of any suitable construction but in the particular embodiment of my invention therein shown, comprises a cup-like casing 10 within which the Bourdon tube 11 is mounted. rPhe instrument is provided at the front with a dial plate 12 suitably marked for indicating changes in pressure by means of an indicating needle 13 which is. mountedzon the stud shaft 1l which projects through the dial plate and is controlled by the Bourdon tube 11 in the usual manner and by means of the usual mechanism` not shown. Mounted in front of the dial plate 12 is the glass face plate 15 which is retained in position by means of a peripheral retaining ring 1C which may also be of any preferred type. and which may be secured to the gage casing 10 in any suitA able manner. lt should be understood that a space or chamber 1T is provided between the dial plate 12 and the face glass 15 in which space the needle` 15% is mounted for indicating. by changes in its position. variations in pressure within the tube 11.

Mounted beneath the edge of the face glass labetween it and the peripheral portion of the dial plate if. is a ring 18 which yis provided with a pluralityY of integral Patented May 2, 191e. 

